Johanna H Monroe , IA January 29, 2017 Appliance: Samsung Refrigerator RF31FMEDBSR/AA-0001 Samsung Refrigerator Rf31fmedbsr/Aa-0001 / : Ice was accumulated in my fridge coils fans etc. How to replace Refrigerator Defrost Heater. Changed the heater sheath that defrosts the coils and defrosted the entire unit.....but samsung fridges are known for this issue the repair part worked great and I appreciate that you tell whether the parts are compatible with our appliances or not. 9 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes